html,
body {
  background-color: red;
}

.box1 {
  width: 100px;
  height: 100px;
  background-image: url('./images/aa.jpg');
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.box2 {
  width: 100px;
  height: 100px;
  background-image: url('./images/bb.png');
  background-repeat: no-repeat;
  background-size: 100% 100%;
  transform: scale(0.5);
  display: flex;
}

::placeholder {
  color: gray;
}